Mountain Hardwear Big Bang SL Minus 15 Degree sleeping bag. Weighs about 4.0 lbs. Unused in new condition. The item “Mountain HW Big Bang SL Minus15 Degree 600 Fill Down Sleeping Bag” is in sale since Saturday, November 30, 2019. This item is in the category “Sporting Goods\Outdoor Sports\Camping & Hiking\Outdoor Sleeping Gear\Sleeping Bags”. The seller is “natalieseclectics” and is located in San Antonio, Texas. This item can be shipped to United States.